Marine Power Systems

Industry-leading technology allows Caterpillar to create the most reliable commercial engines for a variety of applications. From tugs and container vessels to yachts and sport fishers, Cat and MaK engines have demonstrated their efficiency countless times. With remarkable reliability and durability, these engines will exceed your expectations for decades.

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Auxiliary Engines

3512E

The 3512E marine auxiliary engine is now available in a wide range of ratings that meet U.S. EPA Tier 4 Final and IMO III marine emissions regulations. As the commercial marine industry adjusts...

3516E

The 3516E marine auxiliary engine is now available in a wide range of ratings that meet U.S. EPA Tier 4 Final and IMO III marine emissions regulations. As the commercial marine industry adjusts...

C9.3 Auxiliary Engine

C9.3 Auxiliary Engine

Minimum Rating 218bkW
Maximum Rating 325bkW

The C9.3 propulsion, auxiliary, and generator set engines have a common rail fuel system for optimal combustion and lower emissions. Cooling system options for the propulsion and auxiliary engines...

C18 IMO II

Minimum Rating 301.0bkW
Maximum Rating 492.0bkW

C18 ACERT auxiliary/generator set engines incorporate a separate circuit aftercooling system (SCAC) for all configurations. The primary advantage of the SCAC systsem is reduced aftercooler corrosion...

C18 Tier 3

Minimum Rating 465.0bkW
Maximum Rating 599.0bkW

C18 ACERT auxiliary/generator set engines incorporate a separate circuit aftercooling system (SCAC) for all configurations. The primary advantage of the SCAC systsem is reduced aftercooler corrosion...

C280

Minimum Rating 1730.0bkW
Maximum Rating 5420.0bkW

C32 IMO II

Minimum Rating 590.0bkW
Maximum Rating 994.0bkW

C32 ACERT auxiliary/generator set engines incorporate a separate circuit aftercooling system (SCAC) for all configurations. The primary advantage of the SCAC systsem is reduced aftercooler corrosion...

C32 Tier 3

Minimum Rating 781.0bkW
Maximum Rating 994.0bkW

C32 ACERT auxiliary/generator set engines incorporate a separate circuit aftercooling system (SCAC) for all configurations. The primary advantage of the SCAC systsem is reduced aftercooler corrosion...

Commercial Propulsion Engines

3512E EPA Tier 4 Final

3512E EPA Tier 4 Final

The 3512E marine propulsion engine is now available in a wide range of ratings that meet U.S. EPA Tier 4 Final and IMO III marine emissions regulations. As the commercial marine industry adjusts...

3516E Tier 4 Final

3516E Tier 4 Final

The 3516E marine propulsion engine is now available in a wide range of ratings that meet U.S. EPA Tier 4 Final and IMO III marine emissions regulations. As the commercial marine industry adjusts...

C280-12 Tier 4

Building on the durability and reliability of the C280 engine platform, Caterpillar is pleased to offer the EPA Tier 2 compliant C280 engine line. The core components are the same as the existing...

C280-16

Building on the durability and reliability of the C280 engine platform, Caterpillar is pleased to offer the EPA Tier 2 compliant C280 engine line.

C280-8 Tier 4

Building on the durability and reliability of the C280 engine platform, Caterpillar is pleased to offer the EPA Tier 2 compliant C280 engine line.

C9.3 ACERT

*Preliminary Information* The C9.3 ACERT propulsion engine has a B rating of 375 bhp (280 bkW) at 1800 rpm, a C rating of 416 bhp (310 bkW) at 2100 rpm, and a D rating of 476 bhp (355 bkW) at 2300...

M 32 E

Caterpillar Motoren designed the M 32 E based on the reliable M 32 C engine series. The M 32 E will share the same footprint as the successful M 32 C. The M 32 E is the first MaK 5 MW engine in the...

VM 32 E

The new VM 32 E engine is designed for our offshore customers seeking the greatest reliability and durability in combination with stability at high power output. The VM 32 E engine extends the...

VM 46 DF

Based on the successful M 43 C MaK medium speed engine, the M 46 DF was designed by Caterpillar Motoren, Kiel to meet and exceed the reliability and lifetime expectations of the M 43 C while...

C12

Cat® C12 Diesel Marine Propulsion Engines, with ratings of 340-490 bhp (254-366 bkW) at 1800-2300 rpm, meet IMO II emission standards with the exception of the 497 mhp (490 bhp) rating at 2300 rpm...

C18 ACERT IMO II

C18 ACERT IMO II

The C18 ACERT marine propulsion engine has commercial application ratings of 454-715 bhp that meet IMO II & EU Stage IIA emissions regulations, and 469-715 bhp that meet EPA Tier 3, IMO II and EU...

C18 ACERT Tier 3

C18 ACERT Tier 3

The C18 ACERT marine propulsion engine has commercial application ratings of 475-725 mhp (469-715 bhp) at 1800-2100 rpm that meet U.S. EPA Tier 3, IMO II, and EU IW emissions regulations. In...

C32 ACERT IMO II

C32 ACERT IMO II

The C32 ACERT marine propulsion engine is available at ratings that meet IMO II emissions regulations. It has a separate circuit aftercooling system (SCAC) for A through C ratings, six ratings with...

C32 ACERT Tier 3

C32 ACERT Tier 3

The C32 ACERT marine propulsion engine is available at ratings that meet both EPA Tier 3 and IMO II emissions regulations. It has a separate circuit aftercooling system (SCAC) for A through C...

3508C

The 3508C marine propulsion engine meets IMO II emissions regulation and delivers more power with lower emissions for your marine propulsion needs. Additionally, the 3508C provides outstanding fuel...

3512C IMO II

The Cat 3512C marine propulsion engine makes your investment work harder. Through a wide range of available power ratings (including High Displacement ratings), no required aftertreatment...

3512C Tier 3

The 3512C High Displacement marine engines are now available in a wide range of ratings that meet EPA Marine Tier 3 and IMO II regulations without any additional aftertreatment. These new...

3516C IMO II

The 3516C propulsion engine is available with a wide range of ratings that meet IMO II regulations without any additional aftertreatment. These engines provide efficient operation with electronic...

3516C Tier 3

The 3516C propulsion engine is available with a wide range of ratings that meet EPA Tier 3 and IMO II regulations without any additional aftertreatment. These engines provide efficient operation...

C175-16

The C175-16 is the first Cat marine engine with core ACERTTM Technology, designed and built from the ground up. This offers maximum performance along with EPA Marine Tier 3 and IMO Tier II emissions...

C280-6

Building on the durability and reliability of the C280 engine platform, Caterpillar is pleased to offer the IMO II C280 engine line. The core components are the same as the existing C280, including...

C280-8

Building on the durability and reliability of the C280 engine platform, Caterpillar is pleased to offer the IMO II compliant C280 engine line. The core components are the same as the existing C280,...

C280-12

Building on the durability and reliability of the C280 engine platform, Caterpillar is pleased to offer the IMO II compliant C280 engine line. The core components are the same as the existing C280,...

M 20 C

Developed and designed in response to special requirements of marine applications, the M 20 C is characterized by high reliability and economy. These features help to explain the continued high...

M 25 C

The M 25 C, part of the MaK long-stroke engine generation, is based on the proven design characteristics of the M 20 C, M 32 C and M 43 C engine series. When developing this new engine generation,...

M 32 C

The acceptance of the M 32 C long-stroke engine series in the marine industry is a success story, whose equal is hard to find in this power class. Since its introduction in 1994, more than 1600...

M 43 C

Since its introduction into the market, the MaK long-stroke engine series M 43 has achieved an outstanding position on the marine applications market as an in-line engine in 6, 7, 8 and 9 cylinder...

M 46 DF

The low emission footprint paired with high efficiency and reliability make the M 46 DF an ideal propulsion engine for operation inside and outside of environmental protected areas as well as waters...

VM 32 C

The M 32 C V-engine was introduced in 2000 in 12- and 16-cylinder versions. With a bore of 320 mm and a stroke of 460 mm, it covers a power range of 6,000 - 8,000 kW in the 720 and 750 rpm ranges....

VM 43 C

Developed to meet the requirements of the cruise ship and ferry markets, this new engine series is the breakthrough into a new class of power. Designed state-of-the-art, engineered to lead. After...

3406C

The mechanically governed 3406C marine propulsion engine is available “A” rating of 365 bhp (272 bkW) and a “B” rating of 400 bhp (298 bkW).

M 25 E

The new M 25 E has been designed to completely meet the ultimate customer requirements, providing the lowest cost of operation while maintaining the highest uptime in the industry. Since one engine...

M 34 DF

Driven by upcoming fuel sulfur and NOx regulations in Emission Control Areas (ECA), the M 34 DF provides full flexibility for vessels operating in regulated and/or lesser regulated areas without...

High Performance Propulsion Engines

C12.9

The C12.9 marine propulsion engine is ideal for high performance marine applications including yachts, fishing vessels, military vessels, governmental vessels and various other commercial high...

C7.1

The C7.1 marine propulsion engine is ideal for recreational boating applications, specifically smaller vessels and motoryachts ranging from 25 -60 feet in size. The engine features a common rail...

C32 ACERT Tier 3...

C32 ACERT Tier 3 Recreational

C32 ACERT propulsion engine ratings of 1925 mhp (1900 bhp) 1417 bkW, 1825 mhp (1800 bhp) 1342 bkW, and 1622 mhp (1600 bhp) 1193 bkW are available with heat exchanger cooling. These ratings are...

3512C HD

The Cat 3512C marine propulsion engine makes your investment work harder. Through a wide range of available power ratings, no required aftertreatment technology, and nominal rated BSFC fuel...

C12

Cat® C12 Diesel Marine Propulsion Engines, with ratings of 578-609 mhp (570-600 bhp) at 2300 rpm, meet IMO I emission standards. The C12 takes full advantage of the electronically controlled unit...

C12 ACERT

Cat® C12 ACERT Diesel Marine Propulsion Engines, with ratings of 669-715 mhp (660-705 bhp) at 2300 rpm, meet IMO II emission standards. The C12 takes full advantage of the electronically controlled...

C18 ACERT Tier 3

C18 ACERT Tier 3

The C18 ACERT marine propulsion engine has high performance commercial application ratings of 814-1015 mhp (803-1001 bhp) at 2100-2300 rpm that meet U.S. EPA Tier 3, IMO II, and EU Stage IIIA...

C18 ACERT Tier 3...

C18 ACERT Tier 3 Recreational

The C18 ACERT marine propulsion engine has ratings for recreational applications that meet U.S. EPA Tier 3, IMO II, and EU Stage IIIA Regulations. This marine engine incorporates the latest core...

C8.7

The C8.7’s sophisticated fuel delivery system allows the use of a radial, belt-driven supercharger in addition to the conventional turbocharger; this feature eliminates smoke and reduces lugging,...

C9 ACERT

Cat® C9 ACERT Diesel Marine Propulsion Engine, with ratings of 510-575 mhp (503-567 bhp) at 2500 rpm, meets IMO II emission standards.

Marine Generator Sets

C18 (SRMP) Marine...

C18 (SRMP) Marine Generator Set

Minimum Rating 260 ekW (325 kVA)
Maximum Rating 565 ekW (706 kVA)

The C18 SRMP is the latest generator and brings commonality with our petroleum products as well as interfacing improvements. We have also taken this opportunity to add new price list options. All...

C9.3 Marine Generator Set

C9.3 Marine Generator Set

Minimum Rating 185R ekW (231 kVA) at 50hz, 224R ekW (280 kVA) at 60hz
Maximum Rating 250R ekW (313 kVA) at 50hz, 300 ekW (375 kVA) at 60hz

C9.3 ACERT genset packages with heat exchanger or keel cooling are available with60 Hertz ratings of 250 ekW (313 kVA) and 300 ekW (375 kVA) and 50 Hz ratings of 200 ekW (250 kVA) and 250 ekW (313...

VM 32 E

Minimum Rating 6099 kWe (7632 kVA)
Maximum Rating 8593 kWe (10752 kVA)

The VM 32 E is available as a generator set with a new “flexibly-mounted engine on base frame” design and a wet oil sump solution with a resilient mounting for generator set applications without...

VM 46 DF

Minimum Rating 10357 kWe (12960 kVA)
Maximum Rating 14807 kWe (18528 kVA)

The key attributes of the VM 46 DF are class leading efficiency and loading capacity as well as operational simplicity, which is supported by a fully automated engine control. Fast service access as...

C1.5

Minimum Rating 10 ekW (10 kVA)
Maximum Rating 13 ekW (16.5 kVA)

Cat® C1.5 Diesel Marine Generator Set has single phase ratings of 50 Hertz at 10.0 ekW and 60 Hertz at 12.0 ekW that meet U.S. EPA Tier 3 and EU IW emission standards. The Cat® C1.5 also has three...

C2.2

Minimum Rating 16 ekW (16kVA)
Maximum Rating 27 ekW (27 kVA)

Cat® C2.2 Diesel Marine Generator Set has single phase ratings of 50 Hertz at 16.0 and 22.5 ekW and 60 Hertz at 19.0 and 27.0 ekW that meet U.S. EPA Tier 3 and EU IW emission standards.The Cat® C2.2...

C4.4

Minimum Rating 36.0R ekW (45 kVA)
Maximum Rating 99.0 ekW (123 kVA)

Cat® C4.4 Diesel Marine Generator Set has three phase ratings of 50 Hertz at 38.0, 51.5, and 69.0 ekW with heat exchanger cooling and at 36.0, 49.0, and 65.0 ekW with radiator cooling that meet EU...

C7.1

Minimum Rating 100 ekW (125 kVA)
Maximum Rating 200 ekW (250 kVA)

Cat® C7.1 Diesel Marine Generator Set has three phase ratings of 50 Hertz at 100, 118, and 150 ekW with heat exchanger cooling that meet U.S. EPA Tier 3 commercial, IMO II, and EU CC2 emissions...

C32 ACERT IMO II

C32 ACERT IMO II

Minimum Rating 550 eKW (688 kVA)
Maximum Rating 940 ekW (1175 kVA)

C32 ACERT generator sets incorporate a separate circuit aftercooling system (SCAC) for all configurations. The primary advantage of the SCAC systsem is reduced aftercooler corrosion since no sea...

C32 ACERT Tier 3

C32 ACERT Tier 3

Minimum Rating 730 ekW (913 kVA)
Maximum Rating 940 ekW (1175 kVA)

C32 ACERT generator sets incorporate a separate circuit aftercooling system (SCAC) for all configurations. The primary advantage of the SCAC systsem is reduced aftercooler corrosion since no sea...

3512C

Minimum Rating 1550 eKW (1937 kVA)
Maximum Rating 1700 eKW (2125 kVA)

C280-12

Minimum Rating 3520 ekW (4400 kVA)
Maximum Rating 3640 ekW (4550 kVA)

C280-16

Minimum Rating 4700 ekW (5875 kVA)
Maximum Rating 4840 ekW (6050 kVA)

C280-6

Minimum Rating 1760 ekW (2200 kVA)
Maximum Rating 1820 ekW (2275 kVA)

C280-8

Minimum Rating 2350 ekW (2938 kVA)
Maximum Rating 2420 ekW (3025 kVA)

M 20 C

Minimum Rating 979 kWe (1224 kVA)
Maximum Rating 1726 kWe (2160 kVA)

The main features of the diesel generator set M 20 C are ease of installation, reliable operation, ease of maintenance and easy component accessibility. Its base is the rigid frame which forms a...

M 25 C

Minimum Rating 1669 kWe (2088 kVA)
Maximum Rating 2877 kWe (3600 kVA)

The complete diesel generator set is notable for its ease of installation, reliable operation, ease of maintenance and good component accessibility. The basis is formed by the rigid base frame as a...

M 32 C

Minimum Rating 2762 kWe (3456 kVA)
Maximum Rating 4316 kWe (5400 kVA)

The M 32 C was introduced in 1994 in 6, 8 and 9 cylinder versions and is outstandingly suitable as a generator prime mover for electric power on ships. The robust design and moderate speed permits...

M 43 C

Minimum Rating 5754 kWe (7200 kVA)
Maximum Rating 9063 kWe (11340 kVA)

As a generator drive unit for diesel-electric operation of electric motors, the M 43 has proved itself in service. The compact modular construction with less pipework, easy maintenance access to...

VM 32 C

Minimum Rating 5754 kWe (7200 kVA)
Maximum Rating 7672 kWe (9600 kVA)

The VM 32 C was introduced in 2000 in 12- and 16-cylinder versions. The generator set is designed to meet not only the demands of the marine market but also those of the stationary electric power...

VM 43 C

Minimum Rating 11508 kWe (14400 kVA)
Maximum Rating 16111 kWe (20160 kVA)

The VM 43 C has been specially designed to meet the high requirements of the marine engine markets for cruise ships and ferries but also for other specialized ship types. To ensure that passengers...

C4.4 ACERT

Minimum Rating 58R ekW (50 Hz), 51R ekW (60 Hz)
Maximum Rating 88R ekW (50 Hz), 105R ekW (60 Hz)

The C4.4 ACERT marine genset packages with heat exchanger or keel cooling are available with 60 Hz ratings of 60, 75, 99, 118 ekW and 50 Hz ratings of 65, 80, 99 ekW. Radiator cooled gen sets are...

M 25 E

Minimum Rating 2016 kWe (2625 kVA)
Maximum Rating 3024 kWe (3938 kVA)

Designed for a high power output, the M 25 E is not only the right choice for customers seeking power density and increased load response capabilities, but also for those who choose to lower...

M 32 E

Minimum Rating 3165 kWe (3960 kVA)
Maximum Rating 5747 kWe (5940 kVA)

The M 32 E is designed for the offshore market focused on generator set application. The 720/750 rpm concept will reduce generator costs. Charge air cooler housing and charge air cooler allow easier...

M 34 DF

Minimum Rating 2934 kWe (3672 kVA)
Maximum Rating 4574 kWe (5724 kVA)

Caterpillar Motoren designed the M 34 DF based on the reliable M 32 C engine series. It will be capable of operating on multiple fuels without sacrificing the typical MaK marine engine attributes....

M 46 DF

Minimum Rating 5179 kWe (6480 kVA)
Maximum Rating 8329 kWe (10422 kVA)

Based on the successful M 43 C MaK medium speed engine, the M 46 DF was designed by Caterpillar Motoren, Kiel, to meet and exceed reliability and lifetime expectations of its predecessor, while...